A professor is giving the first year medical students their first lecture on autopsies, and decides to give them some basics before you start. “You must be capable of two things to do an autopsy. The first is that you should not have any feeling of fear.” At this point, the teacher puts his finger into the anus of the dead, and then licks.

He asks all students to do the same with the bodies before them. After a couple of minutes of silence to follow suit. “The second thing is that you must have a keen sense of observation: I stuck the middle finger into the anus of the corpse, but I licked my index.”